Anyone have any ideas....... Mower: Toro Zero turn with 19hp Kawasaki motor. I have 560 hours on my 2006 mower. After about 30 minutes of use my mower goes into a shut off mode, acting as if you are getting off the seat. Once it hesisates i stop, put the emergency brake on, and open the handle bars out as if i am parking the mower, it then regains a little life, for a short matter of time. If i let it sit for 20-30 minutes i can mow another 10 mintues but then it does the same thing again, sputtering after 10 minutes of use. What i have done so far: I replaced 2 ignition coil packs, 2 new plugs, run 2 bottles of fuel treatment. and now i am stumped. The hardest part is the fact that the mower works for 30-45 minutes until it gets hot and then the problem above occurs. ANY SUGGESTIONS?